Engraving-machine



(No Model.) 5 Sheets-Sheet 1.

I M. BOOK.

BNGRAVING MACHINE. No. 334,507. Patented Jan. 19, 1886.

l FITNESSES IJVVEJVTOR [ad .11 ttorney Nv PETERS, Phalo-Litllngnpher, Washinghn. ac,

(No Model.) Q 5 Sheets-Sheet 2. M. BOOK.

I 'ENGRAVING MAGHINE.

N0. 334,507. Patented Jan. 19, 1886.

- WW 1m AJA- .dttorney.

(No Model.) 5 Sheets-Sheet 4.

M. BOOK.

ENGRAVING MAGHINE.

No. 334,507. P mtented Jan. '19, 1886.

I 1 I/IIIIII )-\\\\\IIII\\\\\\\\\ III I 'WITJVESSES INVEJVTOR (No Model.) 5 SheetsSheet' 5.

M. BOOK.

ENGRAVING MACHINE.

Patented Jan; 19, 1886.

WITNESSES ceding view.

UNITED STATES PATENT OFFICE.

MARTIN BOOK, OF HAZLETON, PENNSYLVANIA.

ENGRAVlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 334,507, dated January 19,1886. Application filed August 4,1895. Serial No.173,528. (No model.)

T0 at whom it may concern.-

, Be it known that I, MARTIN BOOK, a citizen of the United States, residing at Hazleton, in the county of Luzerne and State of Pennsyl- 5 vania, have invented acertain new and useful Improvement in Engraving Machines, of which the following is a full, clear, and exact description.

This invention relates to machinery for engraving metal and other substances by means of a pattern as a guide for the work to'be done.

The apparatus is constructed substantially upon the principle of a pantograph, and is so articulated throughout as to follow a pattern, however intricate, with all the facility of a skilled hand; and the invention consists in I certain constructions and coi'nbinationsofparts whereby the pattern is transferred to the article to be engraved in any desired proportion of reduction, fineness of line and shade, and degree of slant, as I will now proceed to par; ticularly set forth and claim.

In the accompanying drawings, in the several figures of which like parts are similarly designated, Figure 1 is a front elevation of one form of machine embodying my invention. Fig. 2 is a side elevation of the same. Fig. 3 is a top plan view; and Fig. 4, a crosssection taken in the plane of line w m, Fig. 2, these last two views being on a larger scale than the pre- Fig. 5 is a vertical section of the work-table with the parts rotated a quarterturn from the position of Figs. 1, 2, and 3, and on a-larger scale. Fig. 6 is a sectional elevation of the graver-governor, and Fig. 7 is a sectional elevation of the graver chuck and holder'and of the pivotal universal joint for the main stem or post.

The parts of my engraving-machine may be arranged upon a board, A, set vertical. B is the main bracket, projecting out from the board A at right angles, and receiving in a vertical hole in its outer end the standard 0 of the work-table D, and in another hole the stop pin or gage E for use in connection with the notched flange Fofthe table in engine-work, as will presently appear. The bracket B is curved, as shown in Figs. 3 and 4, to allow swinging of the counter-poise G of the opera-- tive parts of the machine in the process of engraving. The standard 0 (see specially A Fig. 5) is adjustably secured'in the bracket B by means ofaclamp-plate, H, and binding screw I and a split ring or collar, J, the latter being adjustably bound around the standard above the bracket by a pinch-screw, J The standard is made adjustable so as to give the work-table the proper elevation with relation to the graver to properly place the article to be engraved.

In adjusting the tablethe bindingscrew I is first loosened, and then the split ring J is adjusted to the position desired upon the standard, and finally the standard is firmly secured against vibration or other movement in the bracket by tightening up the binding-screw and its plate. The head K of the standard is made as a sphere or ball, and the base L of the table is connected thereto by a socket in it and a friction clampingplate, M. pivoted to the base L, and adapted to be made fast or loose by a set-screw, N (see Figs. 1 and 2,) to respectively hold the table in agiven position and to permit it to be set at any angle required by the article to be engraved. The face of the base L has a guideway or rails, a a, upon which a sub-carriage, N, is arranged to be traversed back and forth across the base by a hand feed-screw, b, swiveled in a lug, c, of

said sul'i-carriage and engaging a stationary nut (not shown) on the base, as such screws are ordinarily arranged. Upon aguideway or rails,d, arranged upon the face of the sub-carriage N, at right angles to the rails ad, is mounted a carriage, O, which is traversed back and forth upon said rails bya hand feed-screw, e, which is swiveled in a lng,f, of said carriage and engages annt, g. on the sub-carriage. 'l he carriage and sub-carriage are secured to the base L by a binding-screw, 1?, having a headed shank, h, arranged in a slot, 2', in the carriage, which slot is countersunk to receive said head, the shank extending thence down through a hole, j, made in the sub-carriage and projecting through a slot, k, in the base at right angles to the slotz' in the carriage, below which base the shank is engaged by a thumb-nut, Z, bearing against the under side of the base, so as to cramp the parts together. This binding-screw serves also to retain upon the base the carriage and sub-carriage in such adjustments as they may be set to. by their fced-screws. Upon the carriage is mounted the work-table Q, which may be a piece of board, and upon this table the work or article to be engraved is held byanysuitable clan1psuch, for example, as that shown at R, Figs. 1, 2, and l,which consists ol'two similar (right and left) jaws, m a, adjustable toward and from one another by thumb-screws o 0, to accommodate the ol'the article to be engraved. The jaws m a have vertical flanges p, shaped to receive various kinds of worksuch as watch-cases, card-plates, and the like. Various sizes and shapes of jaws will be used for the various kinds or shapes of articles to be engraved. The jaws shown will accommodate card-plates and \\2ttt'l1QS,lllG circularlianges beingnotched, as best shown in Fig. 1, to receive the stems of watches. The plate a has a longitudinal slot, q, in its base, through which a bindingscrew, r, is passed into any one of a series of holes, 8, in the table to permitthe clamp to be set in any position 01' the table to center the work with relation to the graver. After the work is once placed in proper position in a properlyarranged clamp further variations of the position of the work may be etteeted by the movement of the carriage or subcarriage by means of their feed screws, the

binding-screw p being first loosened. The work-talile has thus practically a universal movement to adapt it to all kinds or shapes of work.

R R are brackets, preferably connected in casting by a front web, S. and secured to the board A. above the bracket B. Between these brackets R R (see Figs. 2 and 7) is pivoted a member, T, of a universal joint, 1, the other member, U, of which is a loop piv oted to the member 1 at right angles to the axis of its pivots. The member T has an upand-down motion on its pivots, and the loop U moves with it, and has besides a lateral motion with respect to the member T on its own pivots. From the loop U,and rigidly secured thereto, depends the counterpoise G. From the top of the saidloop a post, V, rises, which post is rigidly secured to said loop substantially in the manner indicated in Figs. 2 and 7. The top of the post V is provided with a rigid member, \V, of another universal joint, (see Figs. 2 and 3,) and to this member V is pivoted the loop X, which in turn receives a yoke, Y, upon pivots having their axes at right angles to the axes of the pivots of loop X. The yoke Y has the forward extension.Z, which is an arm carrying the tracer t. The universal or gimbal joint 1 admits ot' a forward and backward and a sidewise motion to the post V, and the joint 2 communicates that motion to the tracer-arm; but the interposition of the loop X provides for keeping said tracer always vertical, notwithstandlng the lateral and back and forth inclinations of the post V. In order to insure the retention of the tracer in a vertical position, I connect to the loop X an arm, u, which in turn is connected by swiveljoint. 3 (see Figs. 1 and 3) with a rod, 12, secured by a universal joint, 4, to a bracket, to, extending out forwardly and laterally from the board A. The post V and rod 12 are parallel, and their centers of motion are in the same horizontal plane, and by means of the arm a said post and rod move together. Thejoints 3 and 4 may be of any approved construction, that'shown being preferred.

The tracer t overl'tangs a patterirtablc, A, (see Figs. 1, 2, and 3,)which is supported from the board A by means of brackets B B. The pattern-table I prei'er consists of three strips of' wood, held together and movable with relation to each other by means of a screw, 0', having a crank, D, by which it may be rotated. This screw 0 passes freely through two adjacent boards of the table, being swiveled in one of them, and engages a nut in the third board, as clearly shown in Fig. 2. Be tween the boards are arranged guide'pins E. as shown in Fig. 3, which are of a length and engage holesin the boards commensurate with the desired separation of the several boards composing the table to receive and clamp the pattern, and springs Fareinterposed between the boards of the table to aid in sc 'mrating said boards.

The patterns G, Fig. 3, as shown in the detached view at thelet't of said tigure,have lips or projections turned down on their under sides to enter the space between adjacent boards when separated to be engaged by said boards when drawn together by screw 0. The design may be made up of any number of patternplates.

H is a sleeve encircling thepost V, and held in any desired vertical adjustment thereon by the block I, carried by said sleeve, and the thumb-screw J,engaging said slceve,and abut' ting against said block to force it against the post V. Arms project fore and alt from said sleeve, and to them is pivoted a loop, K, having the same movement as the loop X, and to the loop K is pivoted a yoke, L, of an arm, M, extending over the worktable. The axes of the pivots of the yoke L are at right angles to the axes of the pivots of the loop K, so that the arm M may have an independent upand-down movement upon the pivots of its yoke, and also a lateral movement without disturbing its vertical position upon the pivots of the loop K, and the said arm M is retained in the vertical position by an arm, y, extending from the loop K to the rod 1), and connected with said rod through the intervention 01' a swivel-joint, 5. The forward end of the arm M is socketed to receive the stem N of the chuck 0, said chuck being held in any desired position in the arm by means of a set-screw, 1?. (See Figs. 1, 2, and 4.) The chuck O has a toolholder, a, which is extended through a hole in the chuck, and is secured against longitudinal movement therein by means of beveled shoulders b c and a set-screw, d, which freely permit rotation of said tool-holder on its longitudinal axis. The tool-holder may be secured against axial movement, as when engraving with an eccentric gravel by means of the set-screw 6, passed into the chuck and bearing against said tool-holder. The beveled shoulders b also serve to make good bearings for the tool-holder in the chuck. The graverf is secured in the tool-holder by the set-screw g, or other suitable device. The member h, which has the shoulder c and set-screw d, is a socket to receive the toolholder, and is further utilized as one member of a universal joint, 6, from which joint extends the stem i, which has a telescopic extension, j, secured to a horizontal plate, it, which in turn is connected to a horizontal plate, Z, by loose links m and guide-pins n,

thelatter passing through slots 0 in the plate k, to permit oscillation of the plates and their movement toward and from one another. The plate Z is secured to the end of a turu-button,

p, by means of a set-screw, g, (see Figs. 2 and 6,) whereby the stems ij may be rotated in order to present different faces of the graver the work being done.

- ator.

Q is an arm pivoted in a box, R, secured to the under side of the pattern-table A, and limited as to its range of motion bya set-screw or stop, 8, in said box. This arm Q is normally held up by a spring, S, which is secured in a bracket, t, to the under side of the table A, and bears up against a finger, u, of the arm Q. The arm Q also has a hand-rest, '0, and in said arm is arranged the turn-button 1), whereby the plates Z 7c, stems-j z", chuck and tool holder, and the free end of the arm M are supported thereby to put the control of their movements under the hand of the oper- Normally the spring S will hold the aforesaid parts up and away from the work,

the operator using his hand upon the handrest 1) to depress the parts into position to cut. A knob or button or other device, to, on the turn-button 19 may be used as an indicator, by which to set the graver in its holder, so that the operator may always know where the face of the graver or tool is.

The yoke L has a pin, T, projecting laterally on its rear end to receive weights Uto counteract the weight of the parts in making fine lines and in engraving soft material, and the stem 1" has a table, 3/, to receive weights to add to the weight of the parts in making deep and heavy lines and in working upon hard material. Normally these parts are balanced.

Scales of any arbitrary character, as shown in Figs. 1, 2, and 7, are placed upon the post medium of'the' sleeve H and adjusting de- Vices I J, the arm 3/ being carried at that ing said arm upon its rod. The joint3 of the arm a is of similar construction.

In adjusting the arms M and 3/ on the post V and rod '1), respectively, a corresponding adjustment must be made in they length of the stems supporting the free end of the arm M, and this last-named adjustment is effected by having the stems 2" telescopic, and securing them in their adjusted position by a clampscrew or other equivalent device, k.

In all of the several joints constituting the articulation of my machine, I prefer to use set-screws as the axes, so that there may be ready compensation for wear of the parts, and that thejoints may be kepttrue.

The notches in the flange F of the worktable (see particularly Fig. 5) are spaced by a scale on the vertical face of the flange, (see Figs. 1 and 2,) so that the extent of rotation of the table may be accurately determined to therebyinsure absolute uniformity in the spacing of the lines in engine-work, and thegage E, co-operating with said notched flange, insures the retention of the table in the given position. This gage is preferably composed of a stem, e secured in a socket/in the bracket Bby a set-screw, f, and has its upper end socketed to receive a pin, 9', which directly engages the notches of the flange F, and is normally held in such engagement by an upwardly-pressing spring, h", arranged beneath said pin in its socket in the stem 0 and such upward movement of said pin is limited by a button. 1', extending outwardly from said pin through a slot, j", in the socket ed end of the stem 6'. Tliebutton 1'" serves also to withdraw the pin 9" from engagement with the notched flange F. When the work does not require the use of the gage B, said gage may be dropped out of contact with the notched flange by loosening its screw f The capabilities of adjustment of the worktable and its clamp enable the operator to ac curately center or position his work, no matter what its shape or contour. The sleeve H and its clamp also permit a rotary adjustment of the arm M upon its post, in order to enable a graver to reach its work laterally. If the arm 3/ be adjusted upon its rod 1; at points above or below the plane of the arm M, the cuts made by the graver will be respectively straighter or more slanting than the pattern. The graver-chuck is adj nstable rotarily on its axial stem by means of the set-screw P, in order to cause the graver to cut a more or less broad line, and it is adjustable longitudinally of its axial stem to reach the work..

The operation is as follows: The pattern having been secured on the pattern-table, and the work having been secured to the worktoo table and properly centered with respect to the gravel, the operator depresses the graver by pressure upon the hand-rest o and proceeds to move the tracer along or in the lines of the pattern, which lines are reproduced in the work by the graver. \Vhen the end of a line is reached, pressure is removed from the handrest so as to permit the spring S to act to lift arm Q, and the graver is thereby raised from the work. The best work will be done by the graver if its cutting-edge be set to out toward the front of the machine, and in such case the tracer should be moved in the same direction only to proceed with the engravin It may therefore be necessary to tilt and depre-s the graver many times in making a single letter, for example. The size of the reproduction upon the article to be engraved of the pattern will be varied according to the leverage the arm Mhas from its position upon its post V. The graver having a lixed relation to the post V, and the tracer also having a similar relation, it follows that the gravcr must pursue the same path as the tracer.

The parts H K L constitute a universal joint, 7. (SeeFigs. 2, at, and 7.)

Vhat I claim is 1. In an engravirig-machine, a work-table having avertical adjustment to adapt it to the height of the work, a rotary adjustment to bring the various parts of the work in position to be engraved, right-angular crosswise adjustments for centering the work, and an an gnlar adjustment to conform to the contour of the work, substantially as described.

2. In an engraving-machine, a work-table provided with a vertically-adjustable standard secured thereto by a ball'and-socket joint to permit rotation and inclination of the table, a subcarriage and means to move it crosswise of the base of the table, and a carriage and means to move it crosswise of the sub-carriage and at right angles totheline of motion'of the subcarriage, combined substantially as de scribed.

3. In an engraving-machine, a work-table provided wit-h a base and a supporting-standard secured thereto, a sub-carriage and carriage and means to move them at right angles to each other crosswise of said base, and a binding-screw extended through the carriage and sub-carriage in slots in said carriage and base intersecting each other in the paths of travel of the carriage and sub-carriage, and clamped against the base to hold said carriage and sub-carriage to the base, substantially as described.

4. In an engraving-machine, a work-table having rotary motion on its standard, and the notched flange F, combined with the gage or stop pin E, to engage said notched flange for use in properly moving the article being engraved in engine-work, substantially as described.

5. The combination, with a supportingbracket, of a standard, an adjustable collar on said standard, and a clamping device engaging said standard to hold it in the position in said bracket predetermined by the adjustable collar, substantially as described.

6. The work clamp R, composed of the movable jaws m a, shaped to receive the article to be engraved, thumb-screws to vary their position with respect to one. another and hold the work in them, a slotted baseplate on one of said jaws, and a set-screw arranged in the slot in said base, combined with a worktable having a series of threaded holes to receive said set'srrew to permit the movement. of the work-holder to any desired position upon the table, substantially as described.

7. In a pantographic engravirig-machine, a work-table. and means to hold the article to be engraved thereon, agraver, and the tracer, combined with a tracerpost, means, substantiallyas s t forth, for insuring the coextensive operation of the tracer and graver, and a series of articulated connections between said tracer and graver and their common post, whereby the movement of the tracer is reprodnced in the gravel, substantially as described.

8. In an engravingmachine, a post, V, pivoted in a universal joint, a graver-arm secured to said post by a universal joint, and held up from the work by a spring-arm, and a tracer-arm also connected to said post by a universal joint, combined with a rod pivoted at one end in a universal joint arranged in the horizontal plane of the pivot of the post V and articulated with said post to follow its various movements, and also articulated with the graver-arm and tracer-arm to cause them to move in axial unison, substantially as described.

9. In an engraving-machine, the post V, pivoted in a universal joint, and provided with a counterpoise. combined with a graverarm secured thereto by a universal joint having a vertical adjustment on said post, and with a tracer, and means to cause the graver to follow the motion of the tracer, substantiall y as described.

10. In anengraving-machine, a graver-arm secured to its operating-post by a universal joint. and adapted to be rotated upon said post to vary its angle to the vertical plane of said post, so as to reach out laterally over the table beyond the limit of the lateral movement of the post, substantially as described.

11. In an engraving-machine, the graverarm and tracer-arm secured to a pivoted post by universaljoints, and each having a yoke forming a member of said universal joints, combined with a pivoted rod, and arms articulated with said rod and the yokes of the graver and tracer arms, substantially as described.

12. In an engraving-machine, the graverarm universally jointed to its operating-post, combined with a suspending stem, for its free end,a pivoted spring-arm from which the said stem depends, and a hand-rest for operating said arm to depress the graver-arm into operative position, substantially as described.

13. In an engraving-machine, the graverarmuuiversally jointed to its operating-post, combined with a suspending-stem for its free end, a pivoted spring-arm from which the said stem depends, a hand-rest for operating said arm to depress the graver-arm into operative position, and a pressure-pin for permitting additional pressure to be given to the graver, substantially as described. I

14. The combination, with the graver-arm, of the graver-arm stem, its supporting and op.- erating arm, and an articulated connection for the two, substantially as described.

15. The graver-arm provided with a chuck axially and longitudinally adjustable therein, substantially as described.

16. The graver'arm and the graver chuck therein provided with a tool-holder having bearings therein, and rotatable by means of the graver-arm stem and a turn-button connected with said stem, substantially as described.

17. The graver-arm, tracer-arm, their common pivotedpost to which they are articulated,

a rod parallel to said post, and armsconnecting said arms to said rod so as to move in parallelism, and means to vary the distance of the graver-arm from the pivot of the post, combined with the telescopic stem for supporting the free end of the graver-arm, substantially as described.

18. In an engraving-machine, a patterntable composed of a series of separable boards held and guided together by a swivel-screw, and guide-pins and springs, substantially as described.

19. The arm Q, for controlling the operation of the graver, pivoted to the pattern-table and provided with a stop, substantially as described.

20. The graver-arm, the suspendingstem, the plates k Z,and connecting-links and guidepins,conibiued with the spring-raised arm Q, to which said parts are connected and through which they are depressed, substantially as described. I

21. In an engraving machine, a graverarm and chuck for receiving the graver-holder, combined with astem for raising andlowering the graver from and to the work, and a universal joint interposed between the graverholder and stem to permit the turning of the cutting-edge of the graver to the desired facet, substantially as described.

In testimony whereof I havehereunto set my hand.

MARTIN BOOK.

Witnesses:

WM. GLOVER, J r., J. WAGNER. 

